cleanup: remove redundant listener and clarify on loadData usage
cleanup: remove redundant listener and clarify on loadData usage

AzharWeb/ngHandsontable,suryasingh/ngHandsontable,suryasingh/ngHandsontable,jintoppy/angular-ui-handsontable,handsontable/ngHandsontable,viktor-hunko/ngHandsontable,kalrover/ngHandsontable,viktor-hunko/ngHandsontable,mattlucas121/ngHandsontable,deenairn/ngHandsontable,AzharWeb/ngHandsontable,kalrover/ngHandsontable,handsontable/ngHandsontable,mattlucas121/ngHandsontable,deenairn/ngHandsontable